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CX2SA > SATDIG 23.04.10 18:05l 1016 Lines 33236 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Double da Donation! (Clint BRADFORD)
2. Re: Arecibo on 432 MHz Moon Bounce (some calculations)
(Art McBride)
3. QubeSat structure question (William Leijenaar)
4. Re: Arecibo on 432 MHz Moon Bounce (some calculations)
(Bruce Robertson)
5. Was: Arecibo, now confusing math (Andrew Glasbrenner)
6. Re: Was: Arecibo, now confusing math (Nigel Gunn G8IFF/W8IFF)
7. Re: QubeSat structure question (JoAnne Maenpaa)
8. Re: Was: Arecibo, now confusing math (tosca005@xxx.xxxx
9. Re: Was: Arecibo, now confusing math (Idle-Tyme)
10. AO-51 MODE V/S (Luc Leblanc)
11. Re: AMSAT-BB Digest, Vol 5, Issue 185 (Bob DeVarney W1ICW)
12. X-37B NORAD 36514 (JC-Aveni)
13. Re: X-37B NORAD 36514 (Alan P. Biddle)
14. Re: Was: Arecibo, now confusing math (i8cvs)
15. Re: X-37B NORAD 36514 (JC-Aveni)
16. Re: QubeSat structure question and PSK31 Xponder (Robert Bruninga)
17. Re: Was: Arecibo, now confusing math (i8cvs)
18. Re: AMSAT-BB Digest, Vol 5, Issue 185 (Tim - N3TL)
----------------------------------------------------------------------
Message: 1
Date: Thu, 22 Apr 2010 22:24:48 -0700
From: Clint BRADFORD <clintbradford@xxx.xxx>
Subject: [amsat-bb] Double da Donation!
To: amsat-bb@xxxxx.xxx
Message-ID: <62ABCC3F-9839-41F5-A887-BE67545EDFF1@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
A reminder - You can make contributions online in the AMSAT Store - and the
Dayton Amateur Radio Association (DARA) will match one-for-one any donations
made to AMSAT between now and June 30, 2010 up to a maximum of $5,000.
No, only your half is tax-deductible for you ... (grin)
What a great way to show your support of amateur satellites! Please tell
your ham friends and club members!
Clint Bradford, K6LCS
909-241-7666
------------------------------
Message: 2
Date: Thu, 22 Apr 2010 22:25:08 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some
calculations)
To: "'Nigel Gunn G8IFF/W8IFF'" <nigel@xxxxx.xxx>, <w3hf@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx 'Stephen Melachrinos' <melachri@xxxxxxx.xxx>
Message-ID: <5AC6769E04094A8D809550CEDCF1999D@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
The mathematical model is well proven. The difference between a isotropic
and a dipole antenna is 2.1 dB. The practical accuracy of field strength
measurements on a antenna range is +/- 3dB, making this whole discussion
theoretical. (Just In The Interest Of Science) or JITIOS!
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nigel Gunn G8IFF/W8IFF
Sent: Thursday, April 22, 2010 6:15 AM
To: w3hf@xxxx.xxx
Cc: amsat-bb@xxxxx.xxxx Stephen Melachrinos
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)
I guess because it's impossible to build an isotropic radiator and therefore
just as impossible to measure it.
Why would I believe, or want to use, something I can neither have, use or
measure?
An isotropic antenna doesn't exist.
On 22-Apr-10 10:20, Stephen Melachrinos wrote:
> In fact, the amateur community is the only place where there is a
fascination with the dipole reference.
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
Club International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC,
GCARES, XWARN.
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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------------------------------
Message: 3
Date: Fri, 23 Apr 2010 01:29:45 -0700 (PDT)
From: William Leijenaar <pe1rah@xxxxx.xxx>
Subject: [amsat-bb] QubeSat structure question
To: amsat-bb@xxxxx.xxx
Message-ID: <209727.13662.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Dear AMSATs,
I have a question concerning?CubeSats structures.
I am looking for a way to?have?a total space of a 1U (10cm x 10cm x 10cm)
CubeSat, of which 0.5U (10cm x 10cm x 5cm) is used for electronics and
battery and the other 0.5U?will be?used for light weight deployable solar
panels.
Has this been done before ?
Any ideas ?
73 de William Leijenaar
PE1RAH
------------------------------
Message: 4
Date: Fri, 23 Apr 2010 08:30:07 -0300
From: Bruce Robertson <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some
calculations)
To: Idle-Tyme <nss@xxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>, Sil - ZL2CIA <zl2cia@xxxxx.xxx>
Message-ID:
<t2l49657a761004230430g2a06c305i5e486a5fbfdac4fa@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Just to add to this discussion of decimal separators, my Canadian
province of New Brunswick is bilingual, and therefore has overlapping
French-speaking and English-speaking school boards. Those in the
French schools and the 30% of the English who have opted to be taught
in French immersion express pi as 3,14, while in English education
they express it as 3.14. I always do a double-take when I see the
comma there in my kids' homework, but they are very comfortable with
using either system depending on the language of discussion.
73, Bruce
VE9QRP
On Thu, Apr 22, 2010 at 4:58 PM, Idle-Tyme <nss@xxx.xxx> wrote:
> Wow that's all messed up?
> I'm 52 and this is the very first time i have ever seen anything like
> this and i have been dealing with science worldwide all my life. ?wow.
>
> Joe
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 4/22/2010 1:14 PM, Sil - ZL2CIA wrote:
>> Idle-Tyme wrote:
>>> On 4/21/2010 8:25 PM, i8cvs wrote:
>>>>> Comma or no comma, shouldn't matter
>>>>> 1000 mega watts or 1,000 Mega watts ?is still one thousand million
>>>>> watts! ?NOT one thousands watts. ?true?
>>>>>
>>>>> The Original Rolling Ball Clock
>>>>> Idle Tyme
>>>>> Idle-Tyme.com
>>>>> http://www.idle-tyme.com
>>>>>
>>>> Hi Idle-Tyme
>>>>
>>>> I don't agree with your statement:
>>>>
>>>> 1000 mega watt are one thousand million watt
>>>> 1,000 mega watt or 1.000 mega watt is only one million watt because
>>>> zero after the comma ?means nothing like 1,0000000000000 is still
>>>> one million watt or 1 MW
>>> NO! ?it's a comma, not a decimal point! it's one thousand, ?one
>>> thousand written 1000 or 1,000 is still one thousand they are exactly
>>> the same.
>> That's only true in the English speaking world, and this is the cause
>> of the confusion in this debate.
>>
>> In the Netherlands (and most of Europe), you would write one thousand
>> million watts as 1.000 megawatts.
>>
>> The decimal indicator in Europe is a comma.
>> For example,
>> 1,5 means one and a half
>> 1.000.000 means one million.
>>
>> Sil
>> (ex PA3HIL)
>>
>>
------------------------------
Message: 5
Date: Fri, 23 Apr 2010 07:50:04 -0400 (EDT)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Was: Arecibo, now confusing math
To: Bruce Robertson <ve9qrp@xxxxx.xxx>, Idle-Tyme <nss@xxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>, zl2cia@xxxxx.xxx
Message-ID:
<5516004.1272023405204.JavaMail.root@xxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
If you really want to bang your head against the wall at how man can't agree
on anything, take a look at the concept of long and short scales:
http://en.wikipedia.org/wiki/Long_and_short_scales Anyone who has worked
with big numbers and old data just loves this one.
73, Drew KO4MA
-----Original Message-----
>From: Bruce Robertson <ve9qrp@xxxxx.xxx>
>Sent: Apr 23, 2010 7:30 AM
>To: Idle-Tyme <nss@xxx.xxx>
>Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>, Sil - ZL2CIA <zl2cia@xxxxx.xxx>
>Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)
>
>Just to add to this discussion of decimal separators, my Canadian
>province of New Brunswick is bilingual, and therefore has overlapping
>French-speaking and English-speaking school boards. Those in the
>French schools and the 30% of the English who have opted to be taught
>in French immersion express pi as 3,14, while in English education
>they express it as 3.14. I always do a double-take when I see the
>comma there in my kids' homework, but they are very comfortable with
>using either system depending on the language of discussion.
>
>73, Bruce
>VE9QRP
>
>On Thu, Apr 22, 2010 at 4:58 PM, Idle-Tyme <nss@xxx.xxx> wrote:
>> Wow that's all messed up?
>> I'm 52 and this is the very first time i have ever seen anything like
>> this and i have been dealing with science worldwide all my life. ?wow.
>>
>> Joe
>>
>> The Original Rolling Ball Clock
>> Idle Tyme
>> Idle-Tyme.com
>> http://www.idle-tyme.com
>>
>> On 4/22/2010 1:14 PM, Sil - ZL2CIA wrote:
>>> Idle-Tyme wrote:
>>>> On 4/21/2010 8:25 PM, i8cvs wrote:
>>>>>> Comma or no comma, shouldn't matter
>>>>>> 1000 mega watts or 1,000 Mega watts ?is still one thousand million
>>>>>> watts! ?NOT one thousands watts. ?true?
>>>>>>
>>>>>> The Original Rolling Ball Clock
>>>>>> Idle Tyme
>>>>>> Idle-Tyme.com
>>>>>> http://www.idle-tyme.com
>>>>>>
>>>>> Hi Idle-Tyme
>>>>>
>>>>> I don't agree with your statement:
>>>>>
>>>>> 1000 mega watt are one thousand million watt
>>>>> 1,000 mega watt or 1.000 mega watt is only one million watt because
>>>>> zero after the comma ?means nothing like 1,0000000000000 is still
>>>>> one million watt or 1 MW
>>>> NO! ?it's a comma, not a decimal point! it's one thousand, ?one
>>>> thousand written 1000 or 1,000 is still one thousand they are exactly
>>>> the same.
>>> That's only true in the English speaking world, and this is the cause
>>> of the confusion in this debate.
>>>
>>> In the Netherlands (and most of Europe), you would write one thousand
>>> million watts as 1.000 megawatts.
>>>
>>> The decimal indicator in Europe is a comma.
>>> For example,
>>> 1,5 means one and a half
>>> 1.000.000 means one million.
>>>
>>> Sil
>>> (ex PA3HIL)
>>>
>>>
>
>_______________________________________________
>Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>Not an AMSAT-NA member? Join now to support the amateur satellite program!
>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Fri, 23 Apr 2010 12:05:57 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4BD18D25.7010100@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Perhaps we should stick to the unambiguous exponential/scientific notation.
Today's date is 2.01E3:4E0:2.3E1
On 23-Apr-10 11:50, Andrew Glasbrenner wrote:
>
> If you really want to bang your head against the wall at how man can't
agree on anything, take a look at the concept of long and short scales:
http://en.wikipedia.org/wiki/Long_and_short_scales Anyone who has worked
with big numbers and old data just loves this one.
>
------------------------------
Message: 7
Date: Fri, 23 Apr 2010 08:15:54 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
Subject: [amsat-bb] Re: QubeSat structure question
To: <amsat-bb@xxxxx.xxx>
Message-ID: <001501cae2e7$1bd09e20$5371da60$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hello William,
> ... light weight deployable solar panels
There is work on university cubesats in progress on light weight deployable
solar panels. It is being discussed at the Cubesat Workshop this week ...
http://www.ustream.tv/channel/CubeSatWorkshop/v3
... and scroll down to the selection for "Implementation of Deployable Solar
Panels on a 1U CubeSat" by Abhishek Bajpayee at the University of Louisiana.
NextGen CubeSat Program (a partnership with AMSAT, IBM, and Binghamton
University engineering students) has said one of their goals would be
deployable solar cells. Likely more update on this project at the AMSAT
Forum in Dayton.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
Editor, AMSAT News Service
Copy Editor, AMSAT Journal
------------------------------
Message: 8
Date: 23 Apr 2010 08:34:32 -0500
From: tosca005@xxx.xxx
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
To: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <Gophermail.2.0.1004230834320.23751@xxxx.xx.xxx.xxx>
Content-Type: text/plain; format=flowed; charset=UTF-8
On Apr 23 2010, Nigel Gunn G8IFF/W8IFF wrote:
>Perhaps we should stick to the unambiguous exponential/scientific notation.
>Today's date is 2.01E3:4E0:2.3E1
>
>On 23-Apr-10 11:50, Andrew Glasbrenner wrote:
>>
>> If you really want to bang your head against the wall at how man can't
>> agree on anything, take a look at the concept of long and short scales:
Unambiguous?
In many parts of the world, today's date would not be
2.01E3/4E0/2.3E1 but rather would be
4E0/2.3E1/2.01E3.2 or
2.3E1/4E0/2.01E3.2 or
2.01E3/2.3E1/4E0
Of course, April 23, 2010 seems clearer than either:
2010/4/23 or
2010/23/4 or
23/4/2010 or
4/23/2010 ...
(IMHO, 2010/23/04 makes most sense, since simple alphabetic sorting of such
dates also comes out in chronological order, with the most significant
digits referring to the biggest chunks - years - and the leas significant
digits referring to the smallest chunks - days - but the leading zeros are
also critical because you don't want October [10] sorting before March [3]
and so it goes!)
Face it, the human race can't agree on anything, except to disagree.
73 de W0JT
------------------------------
Message: 9
Date: Fri, 23 Apr 2010 09:35:37 -0500
From: Idle-Tyme <nss@xxx.xxx>
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
To: amsat-bb@xxxxx.xxx
Message-ID: <4BD1B039.1050800@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Or today is 2455310 in Julian day mode.
Joe
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 4/23/2010 8:34 AM, tosca005@xxx.xxx wrote:
> On Apr 23 2010, Nigel Gunn G8IFF/W8IFF wrote:
>
>
>> Perhaps we should stick to the unambiguous exponential/scientific notation.
>> Today's date is 2.01E3:4E0:2.3E1
>>
>> On 23-Apr-10 11:50, Andrew Glasbrenner wrote:
>>
>>> If you really want to bang your head against the wall at how man can't
>>> agree on anything, take a look at the concept of long and short scales:
>>>
> Unambiguous?
>
> In many parts of the world, today's date would not be
> 2.01E3/4E0/2.3E1 but rather would be
> 4E0/2.3E1/2.01E3.2 or
> 2.3E1/4E0/2.01E3.2 or
> 2.01E3/2.3E1/4E0
>
> Of course, April 23, 2010 seems clearer than either:
> 2010/4/23 or
> 2010/23/4 or
> 23/4/2010 or
> 4/23/2010 ...
>
> (IMHO, 2010/23/04 makes most sense, since simple alphabetic sorting of such
> dates also comes out in chronological order, with the most significant
> digits referring to the biggest chunks - years - and the leas significant
> digits referring to the smallest chunks - days - but the leading zeros are
> also critical because you don't want October [10] sorting before March [3]
> and so it goes!)
>
> Face it, the human race can't agree on anything, except to disagree.
> 73 de W0JT
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 10
Date: Fri, 23 Apr 2010 08:33:03 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] AO-51 MODE V/S
To: amsat-bb@xxxxx.xxx
Message-ID: <4BD15B3F.19317.986E76@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
I was alone on the first morning pass and 2 stations on the second one.
Signal from AOS to LOS where booming on 2.4 with near 30db at TCA
on an overhead pass.
W1AW was calling on a couple of pass but they seems to don't hear anything
N5UXT was also trying to call him with no success. Could be
someone can call them to check if they listen to the correct downlink
frequency or they have an issue on 2.4Ghz.
Great mode but a bit quiet
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 11
Date: Fri, 23 Apr 2010 10:00:52 -0400
From: Bob DeVarney W1ICW <w1icw@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 5, Issue 185
To: amsat-bb@xxxxx.xxx
Message-ID: <4BD1A814.20308@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Congrats, Loren. That's quite an accomplishment for a portable setup.
Just as a yardstick, I got SAT VUCC # 64 back in November of 1996 so you
are definitely in exalted company ;-)
It's actually quite surprising there aren't more VUCCs done in that
length of time. I wonder what the League's statistics are for the
"regular" VUCC.
Moreover, I wonder how many Satellite WAS or WAC awards have been issued
since the 90s. I got sat WAS #299 in December 2004.. WAC is dated 1993,
but I wonder if it can even be done now with the current crop of
satellites. In the Oscar 10 or -13 days you could almost work it in a
single pass. Has anyone heard if a sat DXCC has been done any time in
the recent past?
BTW, this is your opportunity, guys and gals on the -BB, to beat me up
if I owe anyone a QSL card... I am coming out of a long hiatus so I'll
put priority on returning those cards that people are really waiting on.
Some random, Friday morning musings de Bob W1ICW ( the sat operator
formerly known as WE1U )
________________________________
> From: LOREN RASMUSSEN <lorenrasmussen@xxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Thu, April 22, 2010 1:48:49 PM
> Subject: [amsat-bb] Satellite VUCC # 194
>
> It came in the mail today. It took from
> November 2009 through February 2010.
> About 600 QSOs. FT-60R and an Arrow.
> 36 states confirmed.
> Thank you all that returned cards.
> Yeah, I'm jazzed.
> 73
> Loren
> k7cwq
> CN94
>
>
--
"I love the freedoms we got in this country, I appreciate your freedom to
burn your flag if you want to, but I really appreciate my right to bear arms
so I can shoot you if you try to burn mine."
Johnny Cash from "Ragged Old Flag"
------------------------------
Message: 12
Date: Fri, 23 Apr 2010 17:45:24 +0200
From: JC-Aveni <jean-claude.aveni@xxxxxxx.xx>
Subject: [amsat-bb] X-37B NORAD 36514
To: AMSAT- France forum <amsat-france@xxxxxxxxxxxx.xx>, forum AMSAT-BB
<amsat-bb@xxxxx.xxx>
Message-ID: <4BD1C094.40901@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
US Space track
X-37B OTV1 Id NORAD : 36514 ; UN Id : 2010 015A
73 Jean-Claude TK5GH
------------------------------
Message: 13
Date: Fri, 23 Apr 2010 10:51:18 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: X-37B NORAD 36514
To: "'forum AMSAT-BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <E535B6B7F974459A89D7CEF1402B4C4C@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Thanks for the reference.
It will be interesting to see when, and by how much, the orbit is adjusted
over the length of the mission.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of JC-Aveni
Sent: Friday, April 23, 2010 10:45 AM
To: AMSAT- France forum; forum AMSAT-BB
Subject: [amsat-bb] X-37B NORAD 36514
US Space track
X-37B OTV1 Id NORAD : 36514 ; UN Id : 2010 015A
73 Jean-Claude TK5GH
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 14
Date: Fri, 23 Apr 2010 17:59:17 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
To: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>, "AMSAT-BB"
<amsat-bb@xxxxx.xxx>
Message-ID: <004d01cae2fd$ef2a23c0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Friday, April 23, 2010 2:05 PM
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
> Perhaps we should stick to the unambiguous exponential/scientific
notation.
> Today's date is 2.01E3:4E0:2.3E1
>
Hi Nigel G8IFF/W8IFF
For my scientific calculations using my hand calculators I would use
similarly
Today's date is 2.01 x 10^3 : 4 x 10^0 : 2.3 x 10^1
73" de
i8CVS Domenico
------------------------------
Message: 15
Date: Fri, 23 Apr 2010 18:22:25 +0200
From: JC-Aveni <jean-claude.aveni@xxxxxxx.xx>
Subject: [amsat-bb] Re: X-37B NORAD 36514
To: APBIDDLE@xxxxxxx.xxx
Cc: 'forum AMSAT-BB' <amsat-bb@xxxxx.xxx>
Message-ID: <4BD1C941.4030801@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Alan P. Biddle a ?crit :
> Thanks for the reference.
>
> It will be interesting to see when, and by how much, the orbit is adjusted
> over the length of the mission.
>
>
> Alan
> WA4SCA
>
>
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of JC-Aveni
> Sent: Friday, April 23, 2010 10:45 AM
> To: AMSAT- France forum; forum AMSAT-BB
> Subject: [amsat-bb] X-37B NORAD 36514
>
> US Space track
>
> X-37B OTV1 Id NORAD : 36514 ; UN Id : 2010 015A
>
> 73 Jean-Claude TK5GH
>
Confidential of course :-)
JC tk5gh
------------------------------
Message: 16
Date: Fri, 23 Apr 2010 12:38:20 -0400
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: QubeSat structure question and PSK31 Xponder
To: "'William Leijenaar'" <pe1rah@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <D521F3AD7BC94DE78A3322F3A380B8E8@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
> I am looking for a way to?have?a total space of a 1U (10cm x
> 10cm x 10cm) CubeSat, of which 0.5U (10cm x 10cm x 5cm) is
> used for electronics and battery and the other 0.5U?will be?
> used for light weight deployable solar panels.
Our next two cubesats have four deployable solar panels as shown
on this old web page: www.aprs.org/psat.html The mission and
design is very current and manifest, its just that we don?t
maintain a web page any more.
Each cubesat has a free 8.5 cm cube volume for an auxilliary
payload. We have identified a non amateur payload for one of
the cubesats, but I am hoping to fill the other one with an
amateur payload (which is still TBD, though we are manifest for
launch in next March.
I was thinking about asking the AMSAT community to built a PSK31
28 MHz uplink and 435.xxx FM downlink transponder, but did not
want someone to invest a lot of time in something that might not
happen.
But I think we are getting to that point. So if someone wants
to get a free ride to space and risk building a PSK31 linear 28
MHz uplink receiver and UHF FM downlink .5 watt transmitter
downlink, then maybe we should start working together. You can
see that
This PSK3-1 transponder can be completely self contained and has
its own access to space for its deployable antennas because it's
entire volume just slides in from the bottom. It can be flown
or not flown based on last minute decisions independent of the
rest of the design.
Ill find a link to our PSK31 transponder designes used on PCSAT2
and on RAFT.
Bob, Wb4aPR
------------------------------
Message: 17
Date: Fri, 23 Apr 2010 18:38:23 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
To: <tosca005@xxx.xxx>, "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <000c01cae303$6476e140$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: <tosca005@xxx.xxx>
To: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
Cc: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Friday, April 23, 2010 3:34 PM
Subject: [amsat-bb] Re: Was: Arecibo, now confusing math
> On Apr 23 2010, Nigel Gunn G8IFF/W8IFF wrote:
>
> >Perhaps we should stick to the unambiguous exponential/scientific
notation.
> >Today's date is 2.01E3:4E0:2.3E1
> >
> >On 23-Apr-10 11:50, Andrew Glasbrenner wrote:
> >>
> >> If you really want to bang your head against the wall at how man can't
> >> agree on anything, take a look at the concept of long and short scales:
>
> Unambiguous?
>
> In many parts of the world, today's date would not be
> 2.01E3/4E0/2.3E1 but rather would be
> 4E0/2.3E1/2.01E3.2 or
> 2.3E1/4E0/2.01E3.2 or
> 2.01E3/2.3E1/4E0
>
> Of course, April 23, 2010 seems clearer than either:
> 2010/4/23 or
> 2010/23/4 or
> 23/4/2010 or
> 4/23/2010 ...
>
> (IMHO, 2010/23/04 makes most sense, since simple alphabetic sorting of
such
> dates also comes out in chronological order, with the most significant
> digits referring to the biggest chunks - years - and the leas significant
> digits referring to the smallest chunks - days - but the leading zeros are
> also critical because you don't want October [10] sorting before March [3]
> and so it goes!)
>
> Face it, the human race can't agree on anything, except to disagree.
> 73 de W0JT
Hi ,W0JT
In Italy we use 23/4/2010 or
2.3E1/4E0/2.01E3 or
2.3 x 10^1 / 4 x 10^0 / 2.01 x 10^3
Many years ago AMSAT uses another day numbar and for the AMSAT calendar
the AMSAT day 0 = 1 January 1978
73" de
i8CVS Domenico
------------------------------
Message: 18
Date: Fri, 23 Apr 2010 09:52:39 -0700 (PDT)
From: Tim - N3TL <n3tl@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 5, Issue 185
To: w1icw@xxxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <422819.94239.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Bob and all,
WAC definitely is possible - in some portions of the lower 48, at least -
with today's fleet of satellites. On the AO-7 passes that I've used to work
Alaska in the past, far eastern Russia was well within the footprint. The
same is true now for HO-68 during appropriate passes. The obstacle, of
course, is a lack of operators that far east in Russia.
Bob, I suspect you?are too far east to be able to get Hawaii for Oceana.
However, stations at your latitude and slightly farther south (maybe as far
south as 45 degrees, but definitely at 40 degrees and north) who sit
somewhere from the Mississippi River east to at least the Cleveland area
should be able to earn Satellite WAC. UA9CS shows up fairly regularly on
Mode B passes of AO-7, and the log page on the AO-7 Web site reflects that
K3SZH (Harrisburg, Pa., area) works him fairly often. That is asiatic
Russia, so would count for Asia. K8YSE (Cleveland area) has worked WH6BIE on
Oahu. I believe John may also have worked Adrian, AA5UK, when he was
portable earlier this month from KH6. So that's Oceana.
EA8AVI is active on AO-7 and other satellites, and the Canary Islands
provide Africa. From?this far south in EM84, I have worked all but Asia -
and it IS possible here. Sadly, however, it would involve finding an
operator across the Bering Strait who could work either AO-7 Mode B or HO-68
using either the linear or FM transponder. I have looked at a gazillion
low-angle AO-7 passes to my east, and none of them have the right angles to
fit UA9CS and me in the footprint at the same time.
Given HO-68's nice footprint, I believe it should be very possible to earn
Satellite WAS hand-held (and, of course, with a base station) for any
station located from the creater Kansas City area west on the lower 48. It
might even stretch a bit farther east, but I haven't looked at it. Satellite
WAS definitely is possible as far east as my QTH, but it takes the right
pass of either AO-7 or (as I surprisingly discovered) FO-29. And this is
about as far east as either the AO-7 or FO-29 footprints will stretch. But
that makes Satellite WAS possible for a significant portion of the lower 48.
Before closing, let me add my congratulations to Loren on his all-handheld
Satellite VUCC. That's also how I earned mine (No. 170), and it was a real
thrill. The ironic thing is, it took longer to get all the cards I needed to
apply for the award than it did to actually work 100 grids. I needed 28 days
to work 100 grids, but another 49 days to get all the cards I needed to
apply for the award ... hihi. As a result, my all-handheld VUCC was, in all,
a 69-day project. I remember asking on this BB about who else had done
all-handheld VUCC, and there were several operators who responded.
Also - for Loren and others who might be interested - the QRP Amateur Radio
Club International has added satellite endorsements to many of its awards,
including its Grid Square and All States awards. The Grid Square Award is
like VUCC - it requires a minimum of 100 grids. However, the QRP-ARCI award
is far more rare. I suppose that has to do with the nature of QRP operation.
I earned Satellite Grid Square Award No. 1 from them, and it is only No. 7
overall. I encourage anyone who has VUCC using HTs or a QRP rig like the
Yaesu FT-817 to check it out. The group's All States Award is like our
Satellite Communications Achievement Award, which requires confirmed
contacts with at least 20 states/Canadian provinces/DX entities. The
QRP-ARCI All States Award requires contacts with a minimum of 20 states, and
it offers endorsement in increments of 10 states from there (i.e., 30, 40
and 50 states). I earned Satellite All States No. 1 using only contacts I'd
made,
handheld, running 50 milliwatts out of my Yaesu VX-7 HT. My award, which is
only No. 16 overall, is for 30 states at .05-watt.
I suspect that Loren and others have more than they need to earn one or both
of these awards. They're not AMSAT awards, but neither is VUCC, WAS or WAC.
For those of us who enjoy low power, however, I believe they are nice
additions to the awards options we have.
Information on those awards is available at www.qrparci.org.
73 all,
Tim - N3TL
Athens, Ga. - EM84ha
________________________________
From: Bob DeVarney W1ICW <w1icw@xxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Fri, April 23, 2010 10:00:52 AM
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 5, Issue 185
Congrats, Loren. That's quite an accomplishment for a portable setup.
Just as a yardstick, I got SAT VUCC # 64 back in November of 1996 so you
are definitely in exalted company ;-)
It's actually quite surprising there aren't more VUCCs done in that
length of time. I wonder what the League's statistics are for the
"regular" VUCC.
Moreover, I wonder how many Satellite WAS or WAC awards have been issued
since the 90s. I got sat WAS #299 in December 2004.. WAC is dated 1993,
but I wonder if it can even be done now with the current crop of
satellites. In the Oscar 10 or -13 days you could almost work it in a
single pass. Has anyone heard if a sat DXCC has been done any time in
the recent past?
BTW, this is your opportunity, guys and gals on the -BB, to beat me up
if I owe anyone a QSL card... I am coming out of a long hiatus so I'll
put priority on returning those cards that people are really waiting on.
Some random, Friday morning musings de Bob W1ICW ( the sat operator
formerly known as WE1U )
________________________________
> From: LOREN RASMUSSEN <lorenrasmussen@xxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Thu, April 22, 2010 1:48:49 PM
> Subject: [amsat-bb]? Satellite VUCC # 194
>
> It came in the mail today. It took from
> November 2009 through February 2010.
> About 600 QSOs. FT-60R and an Arrow.
> 36 states confirmed.
> Thank you all that returned cards.
> Yeah, I'm jazzed.
> 73
> Loren
> k7cwq
> CN94
>?
>
--
"I love the freedoms we got in this country, I appreciate your freedom to
burn your flag if you want to, but I really appreciate my right to bear arms
so I can shoot you if you try to burn mine."
Johnny Cash from "Ragged Old Flag"
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End of AMSAT-BB Digest, Vol 5, Issue 186
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